Turbine engine power generation

Abstract

The present invention relates to power generation in a turbine engine. A generator within the engine includes: a permanent magnet that emits a first magnetic field and is disposed on a first shaft; a first winding connected to a second shaft such that the first winding is positioned within the first magnetic field; a field winding disposed on the second shaft such that the field winding generates a second magnetic field that rotates as the first shaft rotates relative to the second shaft; a second winding disposed on the first shaft and positioned to receive the second magnetic field when the first shaft rotates relative to the second shaft and provide an electrical power input to a resonant transmitter to generate a third magnetic field; and a resonant receiver disposed on a housing of the engine and positioned to receive the third magnetic field and convert it into an electrical output.

Description

Technical Field

[0001] Aspects of the present disclosure generally relate to electrical energy generation from turbine engines. More specifically, the present disclosure relates to converting mechanical energy from turbine engines (such as may be used in aircraft and other vehicles) into electrical energy and transferring that energy to an associated vehicle via an electromagnetic field. Background Art

[0002] Various vehicles use various combinations of engines to provide power thrust and steering control to those vehicles. For example, an aircraft may use an engine combined with a turbine to power a jet or propeller. A turbine engine includes several rotating components to provide power thrust and air / gas compression. A generator connected to the rotating components of the turbine engine can extract mechanical rotational energy and convert it into electrical energy, which is used to power various onboard systems of the associated vehicle. Due to the temperatures, rotational speeds, and airflow within the turbine engine, the physical components used to extract rotational energy from the rotating engine components may be subject to a high replacement rate due to wear of the various parts, and it is desirable to avoid introducing reliability issues into other engine components. Additionally, due to the location of the energy extraction components in the turbine engine, repair and replacement may be difficult or time consuming. Summary of the Invention

[0003] In one aspect, the present disclosure provides a system comprising: a permanent magnet emitting a first magnetic field and disposed on a first spool shaft of a turbine engine; a first armature winding connected to a second spool shaft of the turbine engine such that the first armature winding is positioned within the first magnetic field; a main field winding disposed on the second spool shaft such that the main field winding generates a second magnetic field that rotates as the first spool shaft rotates relative to the second spool shaft; a second armature winding disposed on the first spool shaft, the second armature winding positioned to receive the second magnetic field and provide an electrical power input to a resonant transmitter to generate a third magnetic field having at least a predetermined frequency when the first spool shaft rotates relative to the second spool shaft; and a resonant receiver disposed on a casing of the turbine engine and positioned to receive the third magnetic field and convert the third magnetic field into an electrical power output.

[0004] In various aspects, in combination with any of the example systems above or below, the first coil shaft of the system is a high-pressure shaft, wherein the second coil shaft is a low-pressure shaft, and wherein the high-pressure shaft rotates at a first speed that is greater than a second speed at which the low-pressure shaft rotates. In other aspects, in combination with any of the example systems above or below, the first coil shaft is a low-pressure shaft, wherein the second coil shaft is a high-pressure shaft, and wherein the high-pressure shaft rotates at a first speed that is greater than the second speed at which the low-pressure shaft rotates.

[0005] In one aspect, in combination with any of the example systems above or below, the system further includes a rectifier disposed on the second coil axis between the first armature winding and the main field winding, the rectifier converting multi-phase alternating current from the first armature winding generated by the first magnetic field into electrical power input for the main field winding to generate the second magnetic field.

[0006] In one aspect, in combination with any of the above or below example systems, the system further includes: a high-frequency converter disposed between the second armature winding and the resonant transmitter, the high-frequency converter providing an electrical power input to the resonant transmitter at a higher frequency than the second magnetic field received by the second armature winding. In some such aspects, the higher frequency is greater than a difference in rotational speed between the first coil shaft and the second coil shaft and is based on a power transfer efficiency between the resonant transmitter and the resonant receiver.

[0007] In one aspect, in conjunction with any of the example systems above or below, the electrical power output includes a plurality of electrical phases based on a plurality of phases defined in the second armature winding.

[0008] In one aspect, in combination with any of the example systems above or below, the system further includes a power control unit disposed in the housing and connected to a power distribution bus for the vehicle.

[0009] In one aspect, the present disclosure provides a turbine engine, which includes: a casing defining an air inlet at an upstream end, a compression section downstream of the air inlet, a combustion section downstream of the compression section, a turbine section downstream of the combustion section, and an exhaust port at a downstream end; a first shaft coupled to a first compressor of the compression section and a first turbine of the turbine section, wherein the first shaft is configured to rotate at a first rotational speed; a second shaft coupled to a second compressor of the compression section and a second turbine of the turbine section and extending coaxially with the first shaft, wherein the second shaft is configured to rotate at a second rotational speed; a first armature winding connected to one of the first shaft and the second shaft; a permanent magnet emitting a first magnetic field, the first magnetic field being configured to rotate at a speed corresponding to the first rotational speed and the second rotational speed. a first electromagnet connected to the first armature winding and configured to emit a second magnetic field when powered by the first current; a second armature winding connected to a different one of the first shaft and the second shaft than the first armature winding, configured to rotate relative to the first electromagnet at the differential rotational speed and having a second current induced in the second armature winding by the second magnetic field; a resonant transmitter connected to the second armature winding and configured to generate a third magnetic field having at least a predetermined frequency when powered by the second current; and a resonant receiver disposed on a casing of the turbine engine and positioned to receive the third magnetic field and convert the third magnetic field into electrical power output.

[0010] In various aspects, in combination with any of the above or below example turbine engines, the turbine engine further includes a third shaft coupled to a third compressor downstream of the first and second compressors of the compression section and coupled to a third turbine upstream of the first and second turbines of the turbine section, wherein the third shaft extends coaxially with the second shaft and is configured to rotate at a third rotational speed greater than the first and second rotational speeds. In some such aspects, the turbine engine further includes: a secondary first armature winding coupled to one of the third shaft and the second shaft; a secondary permanent magnet emitting a secondary first magnetic field configured to rotate relative to the secondary first armature winding at a secondary differential rotational speed corresponding to a secondary difference between the third rotational speed and the second rotational speed, and to induce a secondary first current in the secondary first armature winding; a secondary first electromagnet coupled to the secondary first armature winding and configured to emit a secondary second magnetic field when powered by the secondary first current; a secondary second armature winding coupled to the secondary first armature winding and configured to emit a secondary second magnetic field when powered by the secondary first current; and a secondary second armature winding coupled to the secondary first armature winding. The armature winding is connected to a shaft different from the secondary first armature winding, one of a third shaft and a second shaft, and is configured to rotate relative to the secondary first electromagnet at the secondary differential rotational speed, and has a secondary second current induced in the secondary second armature winding by the secondary second magnetic field; a secondary resonant transmitter is connected to the secondary second armature winding and is configured to generate a secondary third magnetic field having at least a secondary predetermined frequency when powered by the secondary second current; and a secondary resonant receiver is disposed on a casing of the turbine engine and is positioned to receive the secondary third magnetic field and convert the secondary third magnetic field into a secondary electric power output. In other aspects, in combination with any of the above or below example turbine engines, the turbine engine further includes a third shaft coupled to a third compressor of the compression section upstream of the first and second compressors and to a third turbine of the turbine section downstream of the first and second turbines, wherein the third shaft extends coaxially with the second shaft and is configured to rotate at a third rotational speed that is less than the first rotational speed and the second rotational speed.In some such aspects, the turbine engine further includes: a secondary first armature winding connected to one of the third shaft and the second shaft; a secondary permanent magnet emitting a secondary first magnetic field, the secondary first magnetic field being configured to rotate relative to the secondary first armature winding at a secondary differential rotational speed corresponding to a secondary difference between the third rotational speed and the second rotational speed, and to induce a secondary first current in the secondary first armature winding; a secondary first electromagnet connected to the secondary first armature winding and configured to emit a secondary second magnetic field when powered by the secondary first current; and a secondary second armature winding. an armature winding connected to a different one of the third and second shafts than the secondary first armature winding, configured to rotate relative to the secondary first electromagnet at the secondary differential rotational speed, and having a secondary second current induced in the secondary second armature winding by the secondary second magnetic field; a secondary resonant transmitter connected to the secondary second armature winding, configured to generate a secondary third magnetic field having at least a secondary predetermined frequency when powered by the secondary second current; and a secondary resonant receiver disposed on a casing of the turbine engine and positioned to receive the secondary third magnetic field and convert the secondary third magnetic field into a secondary electric power output.

[0011] In one aspect, in combination with any of the above or below example turbine engines, the turbine engine further includes a nacelle defining a bypass flow chamber in which the outer casing is disposed; and a transmission cable disposed in the bypass flow chamber extending from the outer casing to electrically connect the resonant receiver to a power distribution bus of a vehicle. In some such aspects, the turbine engine further includes a power control unit disposed in the bypass flow chamber outside the outer casing, the power control unit being electrically connected between the resonant receiver and the transmission cable. In some such aspects, the resonant transmitter further includes: a multi-phase armature winding having a predetermined number of phase windings, thereby emitting a third magnetic field in a corresponding number of phases; and a high-frequency converter located between the multi-phase armature winding and the second armature winding, the high-frequency converter being configured to convert the second current to at least the predetermined frequency.

[0012] In one aspect, the present disclosure provides a method, the method comprising: rotating a permanent magnet attached to a first shaft of a turbine engine and emitting a first magnetic field about a first axis and relative to a second axis of the turbine engine to induce a multi-phase alternating current in a first armature winding disposed on the second shaft of the turbine engine; supplying power to a first electromagnet disposed on the second shaft via the multi-phase alternating current to generate a second magnetic field; inducing a single-phase direct current in a second armature winding disposed on the first shaft by the second magnetic field; supplying power to a resonant transmitter via the single-phase direct current to generate a third magnetic field at or above a predetermined frequency; and converting the third magnetic field into an electrical power output via a resonant receiver disposed on a casing of the turbine engine as the third magnetic field rotates.

[0013] In one aspect, the above method further comprises delivering the electrical power output to an electrical bus of the vehicle.

[0014] In one aspect, the present disclosure provides a method comprising: attaching a permanent magnet to the first shaft at an interface region between the first and second shafts of a turbine engine; attaching a first coil bobbin assembly comprising a first armature winding and a first electromagnet to the second shaft to place the first armature winding within a first magnetic field emitted by the permanent magnet; attaching a second coil bobbin assembly comprising a second armature winding and a resonant transmitter to the first shaft relative to the first coil bobbin assembly such that the second armature winding is positioned relative to the first electromagnet to receive a second magnetic field when the second armature winding is rotated relative to the first electromagnet; and attaching a resonant receiver to an inner surface of a casing of the turbine engine relative to the resonant transmitter to receive a third magnetic field when the resonant transmitter radiates the third magnetic field.

[0015] In one aspect of the above method, the second coil bobbin assembly includes a permanent magnet, and the second coil bobbin is a low voltage coil bobbin that protrudes from the first coil bobbin at the interface region. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order that the manner in which the above-described features may be understood in detail, a more particular description, briefly summarized above, may be had by reference to example aspects thereof, some of which are illustrated in the accompanying drawings.

[0017] Figure 1A and Figure 1B A turbine engine including a cross-section of one or more generators according to aspects of the present disclosure is illustrated.

[0018] Figure 2A and Figure 2B Illustrated are cross-sectional views of components of an electrical extractor according to aspects of the present disclosure.

[0019] Figure 3A and Figure 3B Illustrated are cross-sectional views of components of a generator and the magnetic field generated therein according to aspects of the present disclosure.

[0020] Figure 4 is a circuit diagram of electromagnetic components of a generator according to aspects of the present disclosure.

[0021] Figure 5 is a circuit diagram illustrating in detail a resonant transmitter and a resonant receiver according to aspects of the present disclosure.

[0022] Figure 6 is a flow chart of a method for construction of a generator according to aspects of the present disclosure.

[0023] Figure 7 is a flow chart of a method for extracting electrical energy from a turbine engine according to aspects of the present disclosure. DETAILED DESCRIPTION

[0024] The present disclosure provides a method for extracting and transferring power from rotating components of a turbine engine via electromagnetic (EM) components that are not in physical contact with each other, but rather extract and convert rotational energy into electrical energy via a series of induced magnetic fields. A permanent magnet attached to a first shaft of the engine rotates relative to a first armature winding on a second shaft of the engine to induce a current in the first armature as the two shafts rotate relative to each other while the engine is operating. This induced current in turn powers an electromagnet, which induces a current in a second armature winding attached to the first shaft to power a high-frequency resonator, which generates a third magnetic field having a high frequency to induce a current in a receiving circuit located in a fixed position on a housing or casing of the engine, thereby transferring power to the electrical system of the vehicle.

[0025] Electromagnetic power transfer components are arranged in a radially symmetrical manner around the engine and contact a single thrust-generating component (e.g., spool core, housing). An air gap separates the following components: a permanent magnet and a first armature winding; a first electromagnet and a second armature winding; a resonant transmitter and a resonant receiver. Because no electromagnetic power transfer component physically contacts more than one thrust-generating component of the engine or another power transfer component connected to a different thrust-generating component, such a system may experience less wear and tear and correspondingly reduce the replacement rate of power transfer components. In addition, the electromagnetic components do not transmit power via wires or shafts arranged in the airflow of the turbine engine and may be relatively lightweight compared to gearboxes and shafts that transmit rotational energy to external generators, thereby providing higher mechanical and fuel efficiency for the engine. Furthermore, the efficiency of power extraction and transmission via the electromagnetic power transfer components can exceed the efficiency of mechanical power transfer components, thereby further improving engine efficiency.

[0026] Although the examples provided in this disclosure primarily illustrate the use of the power transfer system in a turbine engine of an aircraft, the power transfer system described in this disclosure may be used in conjunction with automobiles, buses, trains, ships, and various other vehicles.

[0027] Figure 1A and Figure 1B A turbine engine 100 is illustrated, including a cross-section of one or more generators 110. The turbine engine 100 includes an outer casing 120 defining an air inlet 121 at an upstream end, a compression section 122 downstream of the air inlet 121, a combustion section 123 downstream of the compression section 122, a turbine section 124 downstream of the combustion section 123, and an exhaust 125 at a downstream end. In various aspects, the outer casing 120 is contained within a nacelle 130 (also referred to as a casing), and a bypass flow chamber 131 is defined between an outer surface of the outer casing 120 and an inner surface of the nacelle 130, wherein transmission cables 140 link the generators 110 to a power distribution bus 150 or other power transfer mechanism for a vehicle including the turbine engine 100.

[0028] Figure 1A The turbine engine 100 includes a first coil bobbin 160A (generally coil bobbin or shaft 160) and a second coil bobbin 160B, and Figure 1B The turbine engine 100 includes a first coil shaft 160A, a second coil shaft 160B, and a third coil shaft 160C. The identified portions 160A, 160B, and / or 160C generally refer to the shaft 160. Each shaft 160 extends coaxially with the other shafts 160 and rotates at different rates relative to each other during operation to drive the associated compressors 170A to 170B or 170A to 170C (generally, compressors 170) and turbines 180A to 180B or 180A to 180C (generally, turbines 180) at different rates. For example, the first coil shaft 160A rotates to drive the rotation of the first compressor 170A and the first turbine 180A at a first rotational speed, while the second coil shaft 160B rotates to drive the rotation of the second compressor 170B and the second turbine 180B at a second rotational speed. Similarly, in Figure 1B In the embodiment of the present invention, the third coil shaft 160C rotates to drive the rotation of the third compressor 170C and the third turbine 180C at a third rotational speed, wherein the first, second and third rotational speeds are different from each other.

[0029] The compressors 170 are disposed in the compression section 122 of the housing 120 and may each include a plurality of fan blades arranged in one or more rows. The turbines 180 are disposed in the turbine section 124 of the housing 120 and may each include a plurality of fan blades arranged in one or more rows. Although not illustrated, various bearings or low-friction surfaces may be located between the shafts 160 to improve the rotational characteristics of the shafts 160 (e.g., to reduce friction).

[0030] like Figure 1A As shown, first coil shaft 160A is a low-pressure shaft relative to the high-pressure shaft of second coil shaft 160B. Thus, first compressor 170A is located upstream of second compressor 170B and rotates at a lower rotational speed than second compressor 170B during operation of turbine engine 100. Similarly, first turbine 180A is located downstream of second turbine 180B and rotates at a lower rotational speed than second turbine 180B during operation of turbine engine 100.

[0031] like Figure 1B As shown, relative to each other, first coil shaft 160A is a low-pressure shaft, second coil shaft 160B is an intermediate-pressure shaft, and third coil shaft 160C is a high-pressure shaft. Thus, first compressor 170A is located upstream of second compressor 170B, which is located upstream of third compressor 170C. During operation of turbine engine 100, each of these compressors operates at a lower rotational speed than downstream compressor 170. Similarly, first turbine 180A is located downstream of second turbine 180B, which is located downstream of third turbine 180C. During operation of turbine engine 100, each of these turbines operates at a progressively lower rotational speed than upstream turbine 180.

[0032] Thus, during operation, there is a first differential rotational speed between the first coil bobbin 160A and the second coil bobbin 160B (and any components attached thereto), and Figure 1B In the embodiment, there is a second differential rotational speed between the second coil bobbin 160B and the third coil bobbin 160C (and any components attached thereto) (this second differential rotational speed may be the same as or different from the first differential rotational speed).

[0033] The generator 110 includes an electrical extractor 111 attached to the shaft 160 and an electrical distributor 112 attached to the housing 120. The electrical extractor 111 is not physically connected to the electrical distributor 112, but is separated by an empty space and is electromagnetically linked by a generated magnetic field during operation. The electrical extractor 111 is located at the interface between the two shafts 160 and utilizes the different rotational speeds applied by the different shafts 160 to extract electrical energy. Figure 1AAs shown, the electrical extractor 111 is located at the interface between the first coil bobbin 160A and the second coil bobbin 160B. Figure 1B As shown, the first electrical extractor 111A is located at the interface between the first coil bobbin 160A and the second coil bobbin 160B, and the second electrical extractor 111B is located at the interface between the second coil bobbin 160B and the third coil bobbin 160C. Each electrical extractor 111 is associated with a corresponding electrical distributor 112 (e.g., a first electrical distributor 112A corresponding to the first electrical extractor 111A, a second electrical distributor 112B corresponding to the second electrical extractor 111B) radially attached around a corresponding portion of the housing 120. Although not shown, in some aspects using a three-shaft design, the turbine engine 100 can include only one generator 110; omitting one of the first generator 110A or the second generator 110B.

[0034] Figure 2A and Figure 2B A cross-sectional view of components of the electroextractor 11 is illustrated. Figure 3A and Figure 3B Understand separately Figure 2A and Figure 2B , Figure 3A and Figure 3B Components of a generator 110 and a cross-sectional view of a magnetic field generated therein according to aspects of the present disclosure are illustrated. An electrical extractor 111 is located at the interface of two shafts 160 and between their associated compressors 170. For example, the illustrated electrical extractor 111 may be located between a first compressor 170A on a first coil shaft 160A and a second compressor 170B on a second coil shaft 160B. In another example, the illustrated electrical extractor 111 may be located between a second compressor 170B on a second coil shaft 160B and a third compressor 170C on a third coil shaft 160C.

[0035] In all aspects, Figure 2A or Figure 2B The illustrated components may belong to a single electrical extractor 111 (e.g. Figure 1A ), or belongs to the primary or secondary electrical extractor 111 (as Figure 1B In the aspect including multiple electrical extractors 111, each component can be based on Figure 2A , all based on Figure 2B Or a basis Figure 2A And one based on Figure 2Bto be arranged. As used herein, when distinguishing components between multiple generators 110, components of one generator 110 may be distinguished by referring to those components as "secondary" components. For example, the first electroextractor 111A includes a primary permanent magnet 210, and the second electroextractor 111B includes a secondary permanent magnet 210. In another example, the first electroextractor 111A includes a primary first shaft 160A and a primary second shaft 160B, and the second electroextractor 111B includes a secondary first shaft 160A (which may be the same shaft 160 as the primary first main shaft 160A or the primary second shaft 160B) and a secondary second shaft 160B (which may be the same shaft 160 as the primary first main shaft 160A or the primary second shaft 160B).

[0036] Figure 2A A first component arrangement 200A for an electrical extractor 111 according to aspects of the present disclosure is illustrated, wherein a permanent magnet 210 is positioned on a high voltage shaft 220A at an interface between two shafts 220. The permanent magnet 210 may include a plurality of magnets radially arranged around the high voltage shaft 220A to emit a plurality of first magnetic fields 310, with respect to Figure 3A The plurality of first magnetic fields 310 are illustrated in more detail.

[0037] like Figure 2A As shown in , the first armature winding 230 and the main magnetic field winding 240 (also referred to as the first electromagnet) are included in a first coil bobbin assembly 270A (typically a coil bobbin assembly 270; in particular a high voltage coil bobbin assembly 270 or a low voltage coil bobbin assembly 270), which is connected to the low voltage shaft 220B. The first coil bobbin assembly 270A positions the first armature winding 230 within a predetermined field strength of the first magnetic field 310. The first armature winding 230 is radially arranged around the high voltage shaft 220A and the permanent magnet 210, but is not in physical contact with the high voltage shaft 220A and the permanent magnet 210. In various aspects, the first armature winding 230 generates a first current (I1) as a multi-phase alternating current, which is converted into a second current (I2) as a single-phase direct current, which supplies power to the main magnetic field winding 240 to generate the second magnetic field 320, with respect to Figure 3A The second magnetic field 320 is illustrated in greater detail. The first coil bobbin assembly 270A positions the main field winding 240 outside of the predetermined field strength of the first magnetic field 310, and therefore, the permanent magnet 210 is positioned outside of the predetermined field strength of the second magnetic field 320. In various aspects, a rectifier circuit is included between the first armature winding 230 and the main field winding 240.

[0038] like Figure 2AAs shown, the second armature winding 250 and the resonant transmitter 260 (also referred to as a second electromagnet) are included in a second coil bobbin assembly 270B, which is connected to the same high-voltage shaft 220A as the permanent magnet 210. In various aspects, the resonant transmitter 260 can be placed downstream of the second armature winding 250 along the axis of the shaft 220, or can be placed between the second armature winding 250 and the resonant receiver 340 to reduce the space required for placing the electrical extractor 111 between the compressors 170 along the shaft 220. In some aspects, the permanent magnet 210 is also included in the second coil bobbin assembly 270B, but in other aspects, the permanent magnet 210 can be attached separately to the high-voltage shaft 220A.

[0039] The second coil bobbin assembly 270B positions the second armature winding 250 within a predetermined field strength of the second magnetic field 320. The second armature winding 250 is radially arranged around the low voltage shaft 220B and the first coil bobbin assembly 270A, but is not in physical contact with the low voltage shaft 220B and the first coil bobbin assembly 270A. In various aspects, the second armature winding 250 generates a third current (I3) as a multi-phase alternating current, which powers the resonant transmitter 260 to generate a third magnetic field 330, with respect to Figure 3A The third magnetic field 330 is illustrated in more detail. The second coil bobbin assembly 270B positions the resonant transmitter 260, and therefore the permanent magnet 210 and the first armature winding 230, outside the predetermined field strength of the first and second magnetic fields 310 and 320.

[0040] like Figure 3A As shown, the resonant receiver 340 of the electrical distributor 112 is attached to the inner surface of the housing 120 and is positioned relative to the resonant transmitter 260 to receive at least a predetermined field strength of the third magnetic field 330. The resonant receiver 340 is arranged radially symmetrically around the housing 120 and is configured to receive the third magnetic field 330 to generate a fourth multi-phase alternating current (I4), which can be provided to a bus or other electrical distribution system of the vehicle.

[0041] Figure 2B A second component arrangement 200B for an electrical extractor 111 according to aspects of the present disclosure is illustrated, wherein a permanent magnet 210 is positioned on a low-pressure shaft 220B at an interface between two shafts 220. The permanent magnet 210 may include a plurality of magnets radially arranged around the low-pressure shaft 220 to emit a plurality of first magnetic fields 310, with respect to Figure 3B The plurality of first magnetic fields 310 are illustrated in more detail.

[0042] like Figure 2BAs shown in , the first armature winding 230 and the main field winding 240 (also referred to as the first electromagnet) are included in a first coil bobbin assembly 270A connected to the high voltage shaft 220A. The first coil bobbin assembly 270A positions the first armature winding 230 within a predetermined field strength of the first magnetic field 310. The first armature winding 230 is radially arranged around the low voltage shaft 220B and the permanent magnet 210, but is not in physical contact with the low voltage shaft 220B and the permanent magnet 210. In various aspects, the first armature winding 230 generates a first current (I1) as a multi-phase alternating current, which is converted into a second current (I2) as a single-phase direct current, which powers the main field winding 240 to generate the second magnetic field 320, with respect to Figure 3B The second magnetic field 320 is illustrated in greater detail. The first coil bobbin assembly 270A positions the main field winding 240 outside of the predetermined field strength of the first magnetic field 310, and therefore, the permanent magnet 210 is positioned outside of the predetermined field strength of the second magnetic field 320. In various aspects, a rectifier circuit is included between the first armature winding 230 and the main field winding 240.

[0043] like Figure 2B As shown, the second armature winding 250 and the resonant transmitter 260 (also referred to as a second electromagnet) are included in a second coil bobbin assembly 270B, which is connected to the same low-voltage shaft 220B as the permanent magnet 210. In various aspects, the resonant transmitter 260 can be placed upstream of the second armature winding 250 along the axis of the shaft 220, or can be placed between the second armature winding 250 and the resonant receiver 340 to reduce the space required for placing the electrical extractor 111 between the compressors 170 along the shaft 220. In some aspects, the permanent magnet 210 is also included in the second coil bobbin assembly 270B, but in other aspects, the permanent magnet 210 can be attached separately to the low-voltage shaft 220B.

[0044] The second coil bobbin assembly 270B positions the second armature winding 250 within a predetermined field strength of the second magnetic field 320. The second armature winding 250 is radially arranged around the high voltage shaft 220A and the first coil bobbin assembly 270A, but is not in physical contact with the high voltage shaft 220A and the first coil bobbin assembly 270A. In various aspects, the second armature winding 250 generates a third current (I3) as a multi-phase alternating current, which powers the resonant transmitter 260 to generate a third magnetic field 330, with respect to Figure 3B The third magnetic field 330 is illustrated in more detail. The second coil bobbin assembly 270B positions the resonant transmitter 260, and therefore the permanent magnet 210 and the first armature winding 230, outside the predetermined field strength of the first and second magnetic fields 310 and 320.

[0045] like Figure 3B As shown, the resonant receiver 340 is attached to the inner surface of the housing 120 and is positioned relative to the resonant transmitter 260 to receive at least a predetermined field strength of the third magnetic field 330. The resonant receiver 340 is arranged radially symmetrically around the housing 120 and is configured to receive the third magnetic field 330 to generate a fourth multi-phase alternating current (I4), which can be provided to a bus or other electrical distribution system of the vehicle.

[0046] During operation of the turbine engine 100, in which the components are arranged, the rotational force applied by combustion to generate thrust causes the shaft 160 and the attached EM components to rotate relative to each other and relative to the stationary casing 120. Due to the difference in the rotational speeds of the high-pressure shaft 160A and the low-pressure shaft 160B, the first magnetic field 310 rotates relative to the first armature winding 230, the second magnetic field 320 rotates relative to the second armature winding 250, and the third magnetic field 330 rotates relative to the (nominally stationary) resonant receiver 340. Thus, electrical energy is extracted from the rotational force of the shaft 160 and transferred between the various components via the magnetic fields rather than via mechanical transmission components, gears, etc.

[0047] For the reader's easy identification and distinction, it has been illustrated Figure 2A 、 Figure 2B 、 Figure 3A and Figure 3B 100. The relative sizes and positions of the electromagnetic coupling components in the turbine engine 100 are shown. However, in various aspects, manufacturers may vary the relative sizes, shapes, and orientations of these components based on the physical characteristics of the turbine engine 100 in which the components are installed (e.g., length, circumference, rotational torque, operating temperature), the desired power characteristics of the power extracted (e.g., number of power phases, voltage / current levels), etc. The length of the components along the axis of shaft 220 is determined by the vehicle's torque and / or power rating requirements from the turbine engine 100, and the relative sizes and distances of the various components are sized to optimize the torque generated from the turbine engine 100 and the power transfer efficiency of the generator 110 within the physical confines of the turbine engine 100. Therefore, manufacturers will understand that the sizes / shapes of the figures are used to illustrate operational concepts and are not intended for implementation purposes, and that the sizes / shapes are determined by the power requirements, thrust requirements, and material properties of the components.

[0048] For example, the manufacturer may design the permanent magnets 210 and the first armature winding 230 to be shorter than the rest of the generator 110 to generate and provide a relatively low level of excitation current (e.g., approximately 1 ampere (A) to 50 amperes of rectified DC current). The main field winding 240 carries the excitation current to produce the second magnetic field 320, and to optimize torque in the system, the manufacturer may design the main field winding 240 to be equal in length to the second armature winding 250, which in turn is sized to be as long as possible within the space allotment within the turbine engine 100. For example, the second armature winding 250 may extend over the entire available length of the coil bobbin assembly 270 in which it is deployed (minus any supporting components). Similarly, to optimize the power transfer capabilities of the electrical extractor 111, the resonant transmitter circuit 260 can be sized and positioned to cover the second armature winding 250 so that the resonant transmitter circuit 260 extends the entire length of the electrical extractor 111 and matches the length and position of the receiver circuit 340 to cover the resonant transmitter circuit 260.

[0049] Figure 4 is a circuit diagram 400 of the EM components of the generator 110. A magnetic assembly 410 including a permanent magnet 210 is arranged to be in magnetic contact, rather than physical contact, with a first rotating assembly 420 including a first armature winding 230, a rectifier 430, and a main field winding 240. As used herein, magnetic contact describes a state in which a magnetic field generated by a permanent magnet or an electromagnet has at least a predetermined strength between the two components. The rectifier 430, which may include a plurality of diodes, is disposed between the first armature winding 230 and the main field winding 240 to convert a first current (I1) from a multi-phase AC output of the first armature winding 230 into a second current (I2) of a single-phase DC input to power the electromagnet of the main field winding 240. Provided Figure 4 The first armature winding 230 and rectifier 430 are shown in FIG as an example of a three-phase configuration, but in other aspects, more or less than three phases may be used.

[0050] The first rotating component 420 is arranged to be in magnetic contact with the second rotating component 440 via the main field winding 240 and the second armature winding 250, rather than in physical contact. The second magnetic field 320 generated by the main field winding 240 via the second current (I2) induces a third current (I3) in the second armature winding 250. The second armature winding 250 is Figure 4 2 is illustrated as providing the third current (I3) to the resonant transmitter 260 in three phases, but in other aspects, more or less than three phases may be used.

[0051] First rotating assembly 420 is connected to one shaft 160 of turbine engine 100, and magnetic assembly 410 and second rotating assembly 440 are connected to second shaft 160 of turbine engine 100. Due to the difference in the rotational speeds of each shaft 160 when turbine engine 100 is in operation, first rotating assembly 420 rotates at a different speed relative to magnetic assembly 410 and second rotating assembly 440. Because magnetic assembly 410 and second rotating assembly 440 are connected to the same shaft 160, magnetic assembly 410 and second rotating assembly 440 are stationary relative to each other.

[0052] Second rotating assembly 440 is arranged to be in magnetic, but not physical, contact with stationary assembly 450 via resonant transmitter 260 and resonant receiver 340. Stationary assembly 450 is disposed on (or through) casing 120 of turbine engine 100 and thus remains stationary relative to rotating shaft 160 and the EM components connected thereto. Stationary assembly 450 includes resonant receiver 340 and a power control unit 350 (also referred to as a PCU) that physically connects stationary assembly 450 to the vehicle's electrical bus or other power distribution system. Figure 5 The resonant transmitter 260 and the resonant receiver 340 , discussed in greater detail, respectively generate and receive high frequency magnetic fields at predetermined resonant frequencies to produce power output to the power control unit 350 and the vehicle.

[0053] Figure 5 is a circuit diagram 500 detailing a three-phase example of a resonant transmitter 260 and a resonant receiver 340, according to aspects of the present disclosure. The second armature winding 250 includes a plurality of receiving windings 510A to 510C (generally, receiving windings 510), each of which generates one phase of power from the received second magnetic field 320. In aspects where more or fewer than three phases of power are used, a corresponding number of receiving windings 510 are used. Power is transferred from the receiving windings 510 to a high-frequency converter 520 (e.g., one or more insulated gate bipolar transistors (IGBTs), metal oxide semiconductor field effect transistors (MOSFETs), or other controlled switching devices) to increase the frequency of the power to generate a third magnetic field 330 of a predetermined frequency. The predetermined frequency is greater than the difference between the rotational speeds of the shaft 220 to which the resonant transmitter 260 and other components of the electrical extractor 111 are connected, and is tuned for efficient power transfer across the air gap between the resonant transmitter 260 and the resonant receiver 340. Transmitter capacitors 530A to 530C (typically transmitter capacitors 530 ) are provided at respective outputs of the high frequency converter 520 to act as high pass filters for several phases of power for generating the third magnetic field 330 through a corresponding number of phase windings 540A to 540C (typically phase windings 540 ).

[0054] Each phase winding 540 receives high-frequency power for one phase and generates one phase of the third magnetic field 330, which is received by a corresponding receiver winding 550A to 550C (typically, receiver winding 550) of the multi-phase armature of the resonant receiver 340. Each receiver winding 550 is connected to the power control unit 350 via a corresponding receiver capacitor 560A to 560C (typically, receiver capacitor 560), which acts as a high-pass filter between the associated receiver winding 550 and the power control unit 350. The power control unit 350 can convert power from AC to DC (or convert DC to AC), increase or decrease the number of phases of power, establish or disconnect an electrical connection to a bus, increase or decrease the voltage of power, increase or decrease the frequency of power, etc., to condition the power for consumption or storage in the vehicle.

[0055] Despite Figure 5 340 as a series arrangement of LC (inductive and capacitive) circuits, but in other aspects, the circuits of the resonant transmitter 260 and the resonant receiver 340 can include other arrangements of RLC (resistive, inductive, and capacitive) elements that allow for a resonant magnetic link between the resonant transmitter 260 and the resonant receiver 340 when the resonant transmitter 260 is powered. Other examples include parallel LC circuits, RLC circuits, actively tuned resonant circuits, etc.

[0056] Figure 6 is a flow chart of a method 600 for construction of generator 110 according to aspects of the present disclosure. Method 600 may be performed during initial assembly of turbine engine 100, during modification or repair of turbine engine 100, or as a pre-assembly operation of components of turbine engine 100.

[0057] The method 600 begins at block 610, where the manufacturer attaches a permanent magnet 210 to a first shaft 220 of the turbine engine 100. In various aspects, the first shaft 220 can be a low-voltage coil shaft 220B or a high-voltage coil shaft 220A, and the permanent magnet 210 is positioned in the turbine engine 100 at an area of ​​the first shaft 220 that is intended to meet the second shaft 220.

[0058] In various aspects, block 610 may be repeated to allow a manufacturer to attach secondary permanent magnets 210 to the secondary first shaft 220 (eg, at different locations on the shaft 220 in the primary generator 110 ) for use in a secondary generator 110 in a three-shaft turbine engine 100 .

[0059] At block 620, the manufacturer attaches the first coil bobbin assembly 270A to the area of ​​the second shaft 220 that is intended to interface with the first shaft 220. For example, when attaching the permanent magnet 210 to the high-voltage coil bobbin 220A, the manufacturer attaches the first coil bobbin assembly 270A to the low-voltage coil bobbin 220B, and when attaching the permanent magnet 210 to the low-voltage coil bobbin 220B, the manufacturer attaches the first coil bobbin assembly 270A to the high-voltage coil bobbin 220A. The interface area between the first and second shafts defines an area where one of the shafts extends from the other and is free of fans or blades corresponding to the compressor 170.

[0060] In various aspects, block 620 may be repeated to allow a manufacturer to attach the secondary first bobbin assembly 270A to the secondary second shaft 220 (eg, the third bobbin 160C) for use in a secondary generator 110 in a three-shaft turbine engine 100 .

[0061] The first coil bobbin assembly 270A includes a first armature winding, a first electromagnet, and a spacer. The spacer arranges the first armature winding and the first electromagnet to position the first armature winding in the first magnetic field 310 and separate the first magnetic field 310 from the second magnetic field 320 when the shaft 160 rotates relative to each other during operation of the turbine engine 100.

[0062] At block 630, the manufacturer attaches second coil bobbin assembly 270B to first shaft 220. Second coil bobbin assembly 270B includes a second armature winding, a second electromagnet, and a spacer. The spacer positions the second armature winding within second magnetic field 320 and arranges the second armature winding and the second electromagnet to separate third magnetic field 330 from first magnetic field 310 and second magnetic field 320 when shaft 220 rotates relative to each other during operation of turbine engine 100. In various aspects, permanent magnet 210 is included as a component of second coil bobbin assembly 270B, and blocks 610 and 630 are performed simultaneously.

[0063] In various aspects, block 630 may be repeated to allow a manufacturer to attach the secondary second bobbin assembly 270B to the secondary first shaft 220 (eg, the second bobbin 160B) for use in a secondary generator 110 in a three-shaft turbine engine 100 .

[0064] At block 640, the manufacturer attaches a resonant receiver 340 to the inner surface of the outer casing 120 of the turbine engine 100 relative to the interface area between the two shafts 220 and where the third magnetic field 330 is generated during operation of the turbine engine 100. In various aspects using a three-shaft design, block 640 may be repeated to allow the manufacturer to attach a secondary resonant receiver 340 to a secondary location on the inner surface of the outer casing 120 corresponding to the interface area between the two shafts 220 used by the secondary generator 110 and where the secondary third magnetic field 330 is generated during operation of the turbine engine 100. The method 600 may then end.

[0065] Figure 7 is a flow chart of a method 700 for extracting electrical energy from a turbine engine 100 according to aspects of the present disclosure. As will be appreciated, in a three-shaft turbine engine 100, the method 700 may be performed twice in parallel—extracting electrical power from the differential rotation of the primary and secondary generators 110 at interfaces between different pairs of shafts 160.

[0066] Method 700 begins at block 710, where an operator of turbine engine 100 causes permanent magnets 210 attached to a first shaft 160A of turbine engine 100 to rotate relative to a second shaft 160B of turbine engine 100. The operator may cause relative rotation by engaging turbine engine 100 to generate thrust for a vehicle, inducing rotational energy on shaft 160 through combustion of fuel in a combustion chamber, and exhausting exhaust through a turbine region, thereby causing turbine 180 to rotate the corresponding shaft 160. Permanent magnets 210, which may be part of an array of permanent magnets 210 radially arranged around first shaft 160A, emit a first magnetic field 310. When rotating, first magnetic field 310 induces a first current (I1) as a multi-phase alternating current in a first armature winding disposed on second shaft 160B.

[0067] In various aspects, the "first" shaft 160A may refer to one of the high-pressure or low-pressure shafts in a two-shaft turbine engine 100, and the "second" shaft 160B may refer to the other shaft. Similarly, in a three-shaft turbine engine 100, the "first" shaft 160A may refer to the high-pressure or low-pressure shaft, in which case the "second" shaft 160B may refer to the intermediate-pressure shaft, or the "first" shaft 160A may refer to the intermediate-pressure shaft, in which case the "second" shaft 160B may refer to the high-pressure or low-pressure shaft.

[0068] At block 720 , a second current ( I2 ) is supplied to a first electromagnet (eg, the main field winding 240 ) disposed on the second shaft 160B to generate the second magnetic field 320 .

[0069] At block 730 , the second magnetic field 320 induces a third current ( I3 ) as a multi-phase alternating current in the second armature winding 250 disposed on the first shaft 160A.

[0070] At block 740, a third current (I3) is supplied to a second electromagnet (e.g., resonant transmitter 260) to generate a third magnetic field 330 at or above a predetermined frequency. In various aspects, the predetermined frequency is tuned to characteristics of turbine engine 100 (including, but not limited to, the distance between resonant transmitter 260 and resonant receiver 340, the relative position of third magnetic field 330 in space to other magnetic fields in generator 110, the relative position of primary generator 110 to secondary generator 110, the rotational speed of the shaft, etc.). In various aspects, the predetermined frequency is set high (e.g., at least 10 kHz) to reduce losses when power is wirelessly transferred to resonant receiver 340 via the second electromagnet.

[0071] At block 750, the resonant receiver 340 disposed on the inner surface of the housing 120 converts the rotating third magnetic field 330 into an electrical power output. In various aspects, the electrical power output is a fourth current (I4) provided as a multi-phase alternating current (AC) electrical power output, but in other aspects, the electrical output can be single-phase and / or direct current (DC), depending on the power consumption characteristics of the vehicle.

[0072] At block 760, the resonant receiver 340 delivers power to the electrical bus for use and / or storage by the vehicle. In various aspects, the resonant receiver 340 delivers the power output to the bus via the power control unit 350, which can condition the power, convert the power from AC to DC (or vice versa), reduce or increase the number of phases of the power, establish or disconnect an electrical connection to the bus, increase or decrease the voltage of the power, increase or decrease the frequency of the power, etc.

[0073] Method 700 may continue as long as the operator continues to rotate the first shaft and the second shaft.

[0074] Additionally, this disclosure includes examples according to the following clauses:

[0075] Clause 1. A system comprising: a permanent magnet that emits a first magnetic field and is disposed on a first coil shaft of a turbine engine; a first armature winding that is connected to a second coil shaft of the turbine engine so that the first armature winding is positioned within the first magnetic field; a main magnetic field winding that is disposed on the second coil shaft so that the main magnetic field winding generates a rotating second magnetic field as the first coil shaft rotates relative to the second coil shaft; a second armature winding that is disposed on the first coil shaft and is positioned to receive the second magnetic field when the first coil shaft rotates relative to the second coil shaft and provide an electrical power input to a resonant transmitter to generate a third magnetic field having at least a predetermined frequency; and a resonant receiver that is disposed on a casing of the turbine engine and is positioned to receive the third magnetic field and convert the third magnetic field into an electrical power output.

[0076] Clause 2. The system of clause 1, wherein the first coil shaft is a high-pressure shaft, wherein the second coil shaft is a low-pressure shaft, and wherein the high-pressure shaft rotates at a first speed that is greater than a second speed at which the low-pressure shaft rotates.

[0077] Clause 3. A system according to any one of clauses 1 to 2, wherein the first coil shaft is a low-pressure shaft, wherein the second coil shaft is a high-pressure shaft, and wherein the high-pressure shaft rotates at a first speed that is greater than a second speed at which the low-pressure shaft rotates.

[0078] Clause 4. A system according to any one of clauses 1 to 3, further comprising: a rectifier, which is arranged on the second coil axis between the first armature winding and the main magnetic field winding, and the rectifier converts the multi-phase alternating current from the first armature winding generated by the first magnetic field into an electric power input for the main magnetic field winding to generate the second magnetic field.

[0079] Clause 5. The system of any one of clauses 1 to 4, further comprising: a high-frequency converter disposed between the second armature winding and the resonant transmitter, the high-frequency converter providing an electric power input to the resonant transmitter having a higher frequency than the second magnetic field received by the second armature winding.

[0080] The higher frequency is greater than a difference in rotational speed between the first coil axis and the second coil axis and is based on a power transfer efficiency between the resonant transmitter and the resonant receiver.

[0081] Clause 6. The system of any one of clauses 1 to 5, wherein the electrical power output comprises a plurality of electrical phases based on a plurality of phases defined in the second armature winding.

[0082] Clause 7. The system of any one of clauses 1 to 6, further comprising a power control unit disposed in the housing and connected to a power distribution bus for the vehicle.

[0083] Item 8. A turbine engine, the turbine engine comprising: a casing defining an air inlet at an upstream end, a compression section downstream of the air inlet, a combustion section downstream of the compression section, a turbine section downstream of the combustion section, and an exhaust port at a downstream end; a first shaft coupled to a first compressor of the compression section and a first turbine of the turbine section, wherein the first shaft is configured to rotate at a first rotational speed; a second shaft coupled to a second compressor of the compression section and a second turbine of the turbine section and extending coaxially with the first shaft, wherein the second shaft is configured to rotate at a second rotational speed; a first armature winding connected to one of the first shaft and the second shaft; a permanent magnet emitting a first magnetic field, the first magnetic field being configured to rotate at a speed corresponding to a difference between the first rotational speed and the second rotational speed. a first electromagnet connected to the first armature winding and configured to emit a second magnetic field when powered by the first current; a second armature winding connected to a different one of the first and second shafts than the first armature winding, configured to rotate relative to the first electromagnet at the differential rotational speed and having a second current induced in the second armature winding by the second magnetic field; a resonant transmitter connected to the second armature winding and configured to generate a third magnetic field having at least a predetermined frequency when powered by the second current; and a resonant receiver disposed on the casing of the turbine engine and positioned to receive the third magnetic field and convert the third magnetic field into electrical power output.

[0084] Clause 9. The turbine engine according to clause 8, further comprising: a third shaft connected to a third compressor of the compression section downstream of the first compressor and the second compressor and connected to a third turbine of the turbine section upstream of the first turbine and the second turbine, wherein the third shaft extends coaxially with the second shaft and is configured to rotate at a third rotational speed greater than the first rotational speed and the second rotational speed.

[0085] Clause 10. The turbine engine according to clause 9, further comprising: a secondary first armature winding, the secondary first armature winding being connected to one of the third shaft and the second shaft; a secondary permanent magnet, the secondary permanent magnet emitting a secondary first magnetic field, the secondary permanent magnet being configured to rotate relative to the secondary first armature winding at a secondary differential rotational speed corresponding to a secondary difference between the third rotational speed and the second rotational speed, and to induce a secondary first current in the secondary first armature winding; a secondary first electromagnet, the secondary first electromagnet being connected to the secondary first armature winding and being configured to emit a secondary second magnetic field when powered by the secondary first current; a secondary second armature winding, the secondary a secondary resonant transmitter connected to the secondary second armature winding and configured to generate a secondary third magnetic field having at least a secondary predetermined frequency when powered by the secondary second current; and a secondary resonant receiver disposed on the casing of the turbine engine and positioned to receive the secondary third magnetic field and convert the secondary third magnetic field into a secondary electric power output.

[0086] Clause 11. The turbine engine according to clause 8, further comprising: a third shaft, the third shaft being coupled to a third compressor of the compression section upstream of the first compressor and the second compressor and being coupled to a third turbine of the turbine section downstream of the first turbine and the second turbine, wherein the third shaft extends coaxially with the second shaft and is configured to rotate at a third rotational speed that is less than the first rotational speed and the second rotational speed.

[0087] Clause 12. The turbine engine according to clause 11, further comprising: a secondary first armature winding connected to one of the third shaft and the second shaft; a secondary permanent magnet emitting a secondary first magnetic field, the secondary permanent magnet being configured to rotate relative to the secondary first armature winding at a secondary differential rotational speed corresponding to a secondary difference between the third rotational speed and the second rotational speed, and to induce a secondary first current in the secondary first armature winding; a secondary first electromagnet connected to the secondary first armature winding and configured to emit a secondary second magnetic field when powered by the secondary first current; a secondary second armature winding, a secondary second armature winding connected to a different one of the third shaft and the second shaft from the secondary first armature winding, configured to rotate relative to the secondary first electromagnet at the secondary differential rotational speed, and having a secondary second current induced in the secondary second armature winding by the secondary second magnetic field; a secondary resonant transmitter connected to the secondary second armature winding, configured to generate a secondary third magnetic field having at least a secondary predetermined frequency when powered by the secondary second current; and a secondary resonant receiver disposed on the casing of the turbine engine and positioned to receive the secondary third magnetic field and convert the secondary third magnetic field into a secondary electric power output.

[0088] Clause 13. The turbine engine of clause 8, further comprising: a nacelle defining a bypass flow chamber in which the housing is disposed; and a transmission cable disposed in the bypass flow chamber extending from the housing to electrically connect the resonant receiver to a power distribution bus of a vehicle.

[0089] Clause 14. The turbine engine according to clause 13, further comprising: a power control unit disposed in the bypass flow chamber outside the casing, and electrically connected between the resonant receiver and the transmission cable.

[0090] Clause 15. The turbine engine according to clause 14, wherein the resonant transmitter further comprises: a multi-phase armature winding having a predetermined number of phase windings so as to emit the third magnetic field in a corresponding number of phases; and

[0091] A high-frequency converter is located between the multi-phase armature winding and the second armature winding and is configured to convert the second current into at least a predetermined frequency.

[0092] Clause 16. A method, the method comprising: rotating a permanent magnet attached to a first shaft of a turbine engine and emitting a first magnetic field about a first axis and relative to a second axis of the turbine engine to induce a multi-phase alternating current in a first armature winding disposed on the second shaft of the turbine engine; supplying power to a first electromagnet disposed on the second shaft via the multi-phase alternating current to generate a second magnetic field; inducing a single-phase direct current in a second armature winding disposed on the first shaft via the second magnetic field; supplying power to a resonant transmitter via the single-phase direct current to generate a third magnetic field at or above a predetermined frequency; and converting the third magnetic field into an electrical power output via a resonant receiver disposed on an inner surface of a casing of the turbine engine as the third magnetic field rotates.

[0093] Clause 17. The method of clause 16, further comprising: delivering the electrical power output to an electrical bus of a vehicle.

[0094] Clause 18. A method comprising: attaching a permanent magnet to a first shaft at an interface area between first and second shafts of a turbine engine; attaching a first coil shaft assembly comprising a first armature winding and a first electromagnet to the second shaft to place the first armature winding within a first magnetic field emitted by the permanent magnet; attaching a second coil shaft assembly comprising a second armature winding and a resonant transmitter to the first coil shaft relative to the second coil shaft assembly so that the second armature winding is positioned relative to the first electromagnet to receive a second magnetic field when the second armature winding rotates relative to the first electromagnet; and attaching a resonant receiver to an inner surface of a casing of the turbine engine relative to the resonant transmitter to receive a third magnetic field when the resonant transmitter radiates a third magnetic field.

[0095] Clause 19. The method of Clause 18, wherein the second coil bobbin assembly comprises the permanent magnet, and the second shaft is a low-voltage shaft protruding from the first shaft at the interface region.

[0096] In the present disclosure, reference is made to various aspects. However, it should be understood that the present disclosure is not limited to the specifically described aspects. On the contrary, any combination of the following features and elements, whether or not related to different aspects, can be envisioned to implement and practice the teachings provided herein. In addition, when the elements of these aspects are described in the form of "at least one of A and B", it will be understood that aspects including only element A, only element B, and both element A and element B are envisioned, respectively. In addition, although some aspects can achieve advantages relative to other possible solutions and / or relative to the prior art, whether a specific advantage is achieved by a given aspect does not limit the present disclosure. Therefore, the aspects, features, aspects, and advantages disclosed herein are merely exemplary and, unless explicitly stated in the claims, are not considered elements or limitations of the appended claims. Similarly, reference to the "present invention" should not be interpreted as a summary of any inventive subject matter disclosed herein and, unless explicitly stated in the claims, should not be considered elements or limitations of the appended claims.

[0097] As will be appreciated by those skilled in the art, the aspects described herein can be implemented as systems, methods, or computer program products. Thus, aspects can take the form of entirely hardware aspects, entirely software aspects (including firmware, resident software, microcode, etc.), or aspects combining software and hardware aspects, all of which are generally referred to herein as "circuits," "modules," or "systems." Furthermore, the aspects described herein can take the form of a computer program product embodied in one or more computer-readable storage media having computer-readable program code implemented thereon.

[0098] Aspects of the present disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, devices (systems) and computer program products according to aspects of the present disclosure. It will be understood that the individual blocks of the flowchart illustrations and / or block diagrams and the combination of blocks in the flowchart illustrations and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device create a device for implementing the functions / actions specified in the blocks of the flowchart illustrations and / or block diagrams.

[0099] These computer program instructions may also be stored in a computer-readable medium that can direct a computer, other programmable data processing apparatus, or other device to function in a specific manner so that the instructions stored in the computer-readable medium produce an article of manufacture including instructions that implement the functions / actions specified in the blocks of the flowchart illustrations and / or block diagrams.

[0100] Computer program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus, or other device to produce a computer-implemented process, such that the instructions that execute on the computer, other programmable data processing apparatus, or other device provide a process for implementing the functions / actions specified in the blocks of the flowchart illustrations and / or block diagrams.

[0101] The flowchart illustrations and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various aspects of the present disclosure. In this regard, each box in the flowchart illustration or block diagram can represent a module, segment or part of a code, which includes one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions specified in the box may not occur in the order specified in the figure. For example, depending on the functions involved, the two boxes shown in succession can actually be executed substantially simultaneously, or sometimes these boxes can be executed in the opposite order or out of order. It should also be noted that the combination of each box in the block diagram and / or flowchart illustration and the boxes in the block diagram and / or flowchart illustration can be implemented by a system based on dedicated hardware that performs a specified function or action or a combination of dedicated hardware and computer instructions.

[0102] While the foregoing is directed to aspects of the present disclosure, other and further aspects of the disclosure may be devised without departing from the basic scope thereof, and the scope of the disclosure is determined by the claims that follow.

Claims

1. A system, comprising: a permanent magnet (210) emitting a first magnetic field (310) and arranged on a first coil axis of the turbine engine (100); a first armature winding (230) connected to a second coil shaft of the turbine engine such that the first armature winding is positioned within the first magnetic field; a main magnetic field winding (240), the main magnetic field winding (240) being arranged on the second coil axis so that the main magnetic field winding generates a second magnetic field (320) that rotates as the first coil axis rotates relative to the second coil axis; a second armature winding (250), the second armature winding (250) being disposed on the first coil axis, the second armature winding being positioned such that, when the first coil axis rotates relative to the second coil axis, the second armature winding receives the second magnetic field and provides an electrical power input to the resonant transmitter (260) to generate a third magnetic field (330) having at least a predetermined frequency; as well as A resonant receiver (340) is disposed on the casing (120) of the turbine engine and is positioned to receive the third magnetic field and convert the third magnetic field into an electrical power output.

2. The system according to claim 1, wherein: The first coil shaft is a high-pressure shaft (220A), wherein the second coil shaft is a low-pressure shaft (220B), and wherein the high-pressure shaft rotates at a first speed that is greater than a second speed at which the low-pressure shaft rotates.

3. The system according to claim 1 or 2, wherein: The first coil shaft is a low-pressure shaft (220B), wherein the second coil shaft is a high-pressure shaft (220A), and wherein the high-pressure shaft rotates at a first speed that is greater than a second speed at which the low-pressure shaft rotates.

4. The system according to claim 1 or 2, further comprising: A rectifier (430) is provided on the second coil axis between the first armature winding and the main field winding, and the rectifier (430) converts the multi-phase alternating current from the first armature winding generated by the first magnetic field into an electric power input for the main field winding to generate the second magnetic field.

5. The system according to claim 1 or 2, further comprising: a high-frequency converter (520), the high-frequency converter (520) being arranged between the second armature winding and the resonant transmitter, the high-frequency converter (520) providing the resonant transmitter with an electric power input having a higher frequency than the second magnetic field received by the second armature winding, The higher frequency is greater than a difference in rotational speed between the first coil axis and the second coil axis and is based on a power transfer efficiency between the resonant transmitter and the resonant receiver.

6. The system according to claim 1 or 2, wherein: The electrical power output includes a plurality of electrical phases based on a plurality of phases defined in the second armature winding.

7. The system according to claim 1 or 2, further comprising a power control unit (350) disposed in the housing and connected to a power distribution bus for the vehicle.

8. A turbine engine (100), comprising: A housing (120), wherein the housing (120) defines: an air inlet (121) at the upstream end; a compression section (122) downstream of the air inlet; a combustion section (123) downstream of the compression section; a turbine section (124) downstream of the combustion section; and an exhaust port (125) at the downstream end; a first shaft coupled to the first compressor (170A) of the compression section and the first turbine (180A) of the turbine section, wherein the first shaft is configured to rotate at a first rotational speed; a second shaft coupled to the second compressor (170B) of the compression section and the second turbine (180B) of the turbine section and extending coaxially with the first shaft, wherein the second shaft is configured to rotate at a second rotational speed; a first armature winding (230) connected to one of the first shaft and the second shaft; a permanent magnet (210) emitting a first magnetic field (310), the permanent magnet (210) being configured to rotate relative to the first armature winding at a differential rotational speed corresponding to a difference between the first rotational speed and the second rotational speed, and to induce a first current in the first armature winding; a first electromagnet (240) connected to the first armature winding and configured to emit a second magnetic field (320) when powered by the first current; a second armature winding (250) connected to a different one of the first shaft and the second shaft than the first armature winding and configured to rotate relative to the first electromagnet at the differential rotational speed and having a second current induced in the second armature winding by the second magnetic field; a resonant transmitter (260) connected to the second armature winding and configured to generate a third magnetic field (330) having at least a predetermined frequency when powered by the second current; and A resonant receiver (340) is disposed on the casing of the turbine engine and is positioned to receive the third magnetic field and convert the third magnetic field into an electrical power output.

9. The turbine engine according to claim 8, further comprising: A third shaft is coupled to a third compressor (170C) of the compression section downstream of the first compressor and the second compressor and to a third turbine (180C) of the turbine section upstream of the first turbine and the second turbine, wherein the third shaft extends coaxially with the second shaft and is configured to rotate at a third rotational speed greater than the first rotational speed and the second rotational speed.

10. The turbine engine according to claim 9, further comprising: a secondary first armature winding (230) connected to one of the third shaft and the second shaft; a secondary permanent magnet (210), the secondary permanent magnet (210) emitting a secondary first magnetic field (310), the secondary first magnetic field being configured to rotate relative to the secondary first armature winding at a secondary differential rotational speed corresponding to a secondary difference between the third rotational speed and the second rotational speed, and to induce a secondary first current in the secondary first armature winding; a secondary first electromagnet (240), the secondary first electromagnet (240) being connected to the secondary first armature winding and configured to emit a secondary second magnetic field (320) when powered by the secondary first current; a secondary second armature winding (250) connected to a shaft different from the secondary first armature winding of the third shaft and the second shaft, configured to rotate relative to the secondary first electromagnet at the secondary differential rotational speed, and having a secondary second current induced in the secondary second armature winding by the secondary second magnetic field; a secondary resonant transmitter (260) connected to the secondary second armature winding and configured to generate a secondary third magnetic field (330) of at least a secondary predetermined frequency when powered by the secondary second current; as well as A secondary resonant receiver (340) is provided on the casing of the turbine engine and is positioned to receive the secondary third magnetic field and convert the secondary third magnetic field into a secondary electric power output.

11. The turbine engine according to claim 8, further comprising: A third shaft is coupled to a third compressor (170C) of the compression section upstream of the first compressor and the second compressor and to a third turbine (180C) of the turbine section downstream of the first turbine and the second turbine, wherein the third shaft extends coaxially with the second shaft and is configured to rotate at a third rotational speed that is less than the first rotational speed and the second rotational speed.

12. The turbine engine according to claim 11, further comprising: a secondary first armature winding (230) connected to one of the third shaft and the second shaft; a secondary permanent magnet (210) emitting a secondary first magnetic field (310) configured to rotate relative to the secondary first armature winding at a secondary differential rotational speed corresponding to a secondary difference between the third rotational speed and the second rotational speed and to induce a secondary first current in the secondary first armature winding; a secondary first electromagnet (240) connected to the secondary first armature winding and configured to emit a secondary second magnetic field (320) when powered by the secondary first current; a secondary second armature winding (250) connected to a different one of the third shaft and the second shaft than the secondary first armature winding and configured to rotate relative to the secondary first electromagnet at the secondary differential rotational speed and having a secondary second current induced in the secondary second armature winding by the secondary second magnetic field; a secondary resonant transmitter (260) connected to the secondary second armature winding and configured to generate a secondary third magnetic field (330) having at least a secondary predetermined frequency when powered by the secondary second current; as well as A secondary resonant receiver (340) is provided on the casing of the turbine engine and is positioned to receive the secondary third magnetic field and convert the secondary third magnetic field into a secondary electric power output.

13. The turbine engine according to claim 8, further comprising: a nacelle (130), the nacelle (130) defining a bypass flow chamber (131) in which the housing is disposed; as well as A transmission cable (140) is disposed in the bypass flow chamber and extends from the housing to electrically connect the resonant receiver to a power distribution bus of a vehicle.

14. The turbine engine according to claim 13, further comprising: A power control unit (350) is provided in the bypass flow chamber and outside the housing, and the power control unit (350) is electrically connected between the resonant receiver and the transmission cable.

15. The turbine engine according to claim 14, wherein: The resonant transmitter further comprises: a multi-phase armature winding having a predetermined number of phase windings (540) so as to emit the third magnetic field in a corresponding number of phases; and A high-frequency converter (520) is located between the multi-phase armature winding and the second armature winding and is configured to convert the second current to at least the predetermined frequency.

Images